package com.xujp.cloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author Xjp
 * @version 1.0
 * @date 2021/5/2 下午 05:59
 */
@Service
public class PaymentService {
    /**
     * 正常访问，一切OK
     *
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池:" + Thread.currentThread().getName() + "paymentInfo_OK,id: " + id + "\t" + "O" +
                "(∩_∩)O";
    }

    /**
     * 超时访问，演示降级
     *
     * @param id
     * @return
     */
//    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
//            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value =
//                    "3000")
//    })
    public String paymentInfo_TimeOut(Integer id) {
        int second = 5;
//        int a = 10 / 0;

        try {
            TimeUnit.SECONDS.sleep(second);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:" + Thread.currentThread().getName() + "paymentInfo_TimeOut,id: " + id + "\t" + "O(∩_∩)O，耗费5秒";
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池:" + Thread.currentThread().getName() + "paymentInfo_TimeOutHandler,id: " + id + "\t" + "/(ㄒoㄒ)/~~";
    }

    //=========服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id)
    {
        if(id < 0)
        {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }
}
